Pricing of Prints.

Hello all I've got a job on saturday, shooting a Faery ball! I've got a tidy little area to setup my lights and backdrop and my site has a shop setup to sell the prints. I'm printing them at home on my epson R2400 using Lyson pigment inks and Hahnemuhle paper. I know this isn't the best way but its what I'm doing this time round. This is the 1st of many such balls that I've landed to shoot. Any money I make is mine to keep. Now here's the thing, how do I price my prints? I know roughly what they actually cost me, I'll know exactly when my Ciss needs refilling. I'm gunna be there all day, from 8am till its finish at midnight. Its not really a case of what is my time worth and I dont want to milk it for every possible penny, its a favour for a very good friend and would do it just for the experiance but as I'm still reeling from a recent dose of unemployment the some free money would be nice


How much is to much? I initially thought of pricing them at £15 if bought through the website and £10 if paid on the day. Is that high? Any ideas folks?
This is my little corner

Too late to consider hiring a dye-sub printer for the day? Or even bringing in someone local that does events and already has one. Printing on site should make a massive increase in your sales

Its to late to get someone in, its easter weekend and the only local fella that does events is busy. Ive been looking at buying a dye-sub but really need to see how the 1st one goes before I invest.
Out of intrest where would I hire one from?

I plan on selling A4 prints, mainly because thats what I have the most of, at a tenner paid upfront on the day or fifteen online. I can then sit back and edit and offer various versions of the images to try and secure more sales.
Thanx for the link btw