Savy, I typed up a reply to this but when I hit the Add Reply button the ezboard server returned an error, my reply was lost, and I didn't have time to go back and type it up again... (another eZboard annoyance!)
I was going to say that the Spectra Post Photo was probably the cheapest deal for this - presuming you want 4"x6" prints of every single photo? (10x24 exp and 10x36exp = 600 prints!) Plus you'll end up with 20x24 exp rolls of Spectra's own brand 35mm film (so-so quality, usually 100 or 200ASA, fine for snaps in good light or with a flash...) And yes, that price includes posting to your front door, which is handy. Just pick up the envelopes at any Post Office (4 films per envelope, and you can pay by cheque or credit card, I think).
But if (as I suspect?) you're posting off a batch of films that have been lying in a drawer for ages and you're no longer even sure what's on them, it might just be worth your while checking with a local lab for a 'job lot' price to develop them all and just print you a contact sheet from each film? Then just do the maths and figure out which is the better deal for you...
Years ago, I used to use a small lab on Chelmsford Road in Ranelagh (100m down from the Gem motorbike shop), but (a) I can't for the life of me remember their name!
and (b) I don't know how convenient Ranelagh would be for you. But there must be a lot of similar outfits you could look up in the Yellow pages...
Dr. M.
P.S. Go digital! You know it makes sense...