usell.com (PXHI) 10-K 2017 FY Annual report

 Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the annual report of uSell.com, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2017, as filed with the Securities and Exchange Commission on the date hereof, I, Nikhil Raman, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1. The annual report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and

2. The information contained in the annual report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Nikhil Raman

Nikhil Raman

Chief Executive Officer

(Principal Executive Officer)

Dated: April 4, 2018

In connection with the annual report of uSell.com, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2017, as filed with the Securities and Exchange Commission on the date hereof, I, Jennifer Calabrese, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

1. The annual report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and

2. The information contained in the annual report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Jennifer Calabrese

Jennifer Calabrese

Chief Financial Officer and

Executive Vice President of Finance

(Principal Financial Officer)

Dated: April 4, 2018