www.tasket.com is availible according to whois.net

dartcart.com / .net
cartdart.com /.net

Dart - representing speed
Very simple and all forms available.

All the domains suggested in my entry were available upon entering the contest.

VirtualRealShop
www.virtualrealshop.com

Valuesaurus
www.valuesaurus.com

Thevaluesaurus
www.thevaluesaurus.com

Thousand Goods
www.thousandgoods.com

Myriad Goods
www.myriadgoods.com

Riches Bazaar
www.richesbazaar.com

Varicy
www.varicy.com

commersive ( = commerce + impressive, exclusive)

mercanto ( = merchant + belle canto)

comm.com

SwiftStream

I think that "cartitoff.com" might be a fun and appropriate name.

www.DigitalShopkeeper.com

I spent days inside a thesaurus, a English-Latin dictionary, as well as whois.org and nameprotect.com (every word in Latin is trademarked, I'm convinced) but think you might find these work:

TotalSnap—i. e. completely easy
BandWagon—the one you jump on
Bona Fortuna—Latin for Good Fortune

eg Trasca.com

All Top Level Domains available and unregistered.

Pay-Dough
Monies-R-Us
E-Monies-R-Us
MoniesRUs
eMoniesRUs
ePaidInFull
Check-Out-Now
Spend-It-Now
100-Percent-Sold
RenderTender
Render-Tender
Bought-It