What sort of cost is involved to get stuff printed out like that? Also, what about the counters - not so much printing them as getting them cut.
Its all very interesting, though.
Vistaprint Canada says ~$60 CAD for a 4'x6' vinyl banner.
For counters I'd make and cut my own. 2mm matte board, full sheet label ink jet printer paper, sharp rotary cutter and a steel rule.
So easily less than $100 CAD.