Should I say "at a low price" or "at a low cost"?
I want to place an ad to sell my services. Should I say I have good service at a low price or low cost?
Solution 1:
Low price.
Price is what you charge; cost is what the buyer winds up paying, which may be more or less than the price, and in any event is not under your control.
See this paper for entirely too many details about these words, as well as worth and value.