INSTALLMENT PROMISSORY NOTE

$150,000                                          February 11, 1994
                                                  Phoenix, Arizona


         FOR VALUE  RECEIVED,  the  undersigned,  ILX  INCORPORATED,  an Arizona
corporation  (the  "undersigned"),  promises  to  pay to the  order  of  MARTORI
ENTERPRISES  INCORPORATED,   an  Arizona  corporation  ("Seller"),  at  Phoenix,
Arizona,  or at such  other  place as the  holder  hereof  may from time to time
designate,   the   principal  sum  of  One  Hundred   Fifty   Thousand   Dollars
($150,000.00),  together with interest  thereon at the rate of 10% (ten percent)
per annum  (the  "Note  Rate"),  payable  in 36 equal  monthly  installments  of
principal and interest in the amount of $4,840.08  commencing on March 11, 1994,
and on the  11th  day of each  calendar  month  thereafter.  The  entire  unpaid
principal  balance,  together with all accrued and unpaid  interest  thereon and
other costs payable hereunder, shall be paid in full on February 11, 1997.

         The  undersigned  acknowledges  that the  undersigned has agreed to the
rate of interest represented by the Note Rate, and any additional charges, costs
and fees  arising out of or related to the  transaction  of which this Note is a
part, to the extent deemed to be interest under applicable law.

         Each and  every  payment  due under  this Note  shall be made in lawful
money of the United States of America and in immediately  available  funds,  and
when made shall be first  applied to accrued  costs,  expenses and fees, if any,
then to accrued  interest that has not yet been added to principal,  and then to
the reduction of the principal amount of this Note. This Note may be prepaid, in
whole or in part,  without  penalty or premium,  provided that each such payment
shall be applied as set forth above.

         At the  option  of the  holder  hereof,  any  of  the  following  shall
constitute  a  "default"  hereunder,  and,  upon  the  occurrence  of any of the
following,  all obligations hereunder shall, at the option of the holder hereof,
become immediately due and payable, without presentment for payment,  diligence,
grace,  exhibition of this Note, protest,  further demand or notice of any kind,
all of which are hereby expressly  waived:  (i) any sum owing hereunder or under
any other indebtedness of the undersigned to Seller is not paid as agreed;  (ii)
any petition or application  for any form of relief under any provision of Title
11, United States Code, as amended from time to time (the "Bankruptcy  Code") or
any other law pertaining to reorganization,  insolvency or readjustment of debts
is filed by or  against  the  undersigned,  its  assets  or  affairs;  (iii) the
undersigned  makes an  assignment  for the benefit of  creditors,  is not paying
debts as they become due, or is granted an order for relief under any chapter of
the Bankruptcy Code; (iv) a custodian,  as defined by the Bankruptcy Code, takes
charge of any property of the undersigned; (v) garnishment,  attachment, levy or
execution is issued  against any of the property or effects of the  undersigned;
(vi) termination,  failure to exist or dissolution of the undersigned;  or (vii)
there is any default or breach of any representation,  warranty or covenant,  or
there is any false statement or material omission,  by the undersigned under any
document  forming part of the  transaction in respect of which this Note is made
or forming part of any other transaction under which the undersigned is indebted
to Seller.

         The undersigned hereby agrees: (i) to any and all extensions (including
extensions  beyond the original term hereof) and renewals  hereof,  from time to
time,  without notice, and that no such extension or renewal shall constitute or
be deemed a release of any  obligation of the  undersigned to the holder hereof;
(ii) that any written modification,  extension or renewal hereof executed by the
undersigned  shall constitute a  representation  and warranty of the undersigned
that the unpaid balance of principal, interest and other sums owing hereunder at
the time of such modification,  renewal or extension are owed without adjustment
for offset, counterclaim or other defense of any kind by the undersigned against
Seller;  (iii) that the acceptance by the holder hereof of any performance which
does not  comply  strictly  with the  terms  hereof  shall not be deemed to be a
waiver or bar of any right of said holder,  nor a release of any  obligation  of
the  undersigned to the holder  hereof;  (iv) to offsets of any sums or property
owed to the  undersigned  by the holder  hereof at any time;  (v) that this Note
shall be governed by the laws of the State of Arizona  applicable  to promissory
notes  made and to be paid in the State of  Arizona;  and (vi) to pay the holder
hereof upon demand any and all costs,  expenses and fees  (including  reasonable
attorneys'  fees) incurred in enforcing or attempting to recover  payment of the
amounts due under this Note,  including  negotiating,  documenting and otherwise
pursuing or consummating modifications,  extensions,  compositions,  renewals or
other  similar  transactions  pertaining  to  this  Note,  irrespective  of  the
existence  of an  event of  default,  and  including  costs,  expenses  and fees
incurred before, after or irrespective of whether suit is commenced,  and in the
event suit is brought to enforce payment hereof,  such costs,  expenses and fees
and all other issues in such suit shall be determined by a court sitting without
a jury.

         This Note is  secured  by a Security  (Pledge)  Agreement  of even date
herewith.

         This Note is executed to be effective as of the date set forth above.

                            ILX INCORPORATED, an Arizona corporation




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ATTEST:

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