freddie - Now you're being greedy!
Seriously though, costers sold fruit and other wares from a barrow.
Still, for you, I'll see what else I can come up with!
Thanks again Crofter! You are most probably right - and yours is the best suggestion I have had from anyone so far - just that the question states "reads TOTALLY logically" - I am perhaps looking too deeply into this. I had come up with Parson and Aprons, but a Parson would not logically sell Aprons, so cast that aside. Oh it is driving me mad!!
True freddie, but I'm also thinking that the first word ends with S - so may contain two S's (as in COSTERS). If it does contain one S then I fancy it on the end of the word!