I think it is a great domain, especially as sub domains, cars.atlowcost.com, travel.atlowcost.com. Low $xxx
I would say high xx to a good buyer. Does have nice subdomain potential but is still relatively mediocre imho.
Nice domain. You could do something like this: clothing.atlowcost.com, cars.atlowcost.com Low $xxx to High $xxx for the right buyer.
at is not that much desirable in the front otherwise a good name and concept as pointed by others. high $xx to low $xxx.