This is going along very nicely and I've compiled the sheet as we go along. I think I'll extend it beyond 10 people as there's still plenty of room after the 1st 8 people on an A4 page.
One point though - the £1.75/in is going to be over the whole sheet. The actual cost for your piece will be a hair more because of wastage from cutting etc. Also, if your image isn't exactly square and I make the short dimension 1", you're actually having more than just 1sq.in.
I will work out some fair way of divvying it up at the end and charge you the cost price + postage only. If anyone is on a very tight budget, I won't be offended if this information means you want to pull out.
Cheers.