How much would you pay for a drawing like this one?

Hmm I'd say between 35-40 quid. Especially to start off with, you don't want to out price yourself... and then as you build a reputation then you could consider raising the price.

Get together a few examples of work so that you can let people see exactly the kind of portraits you specialize in.

Good luck, the link to the pic is very good!

For a mortgage company you should get a draw based on those clients you established. However, there is probably a minimum of time for this. Check your personnel file that stated that you will now be working on a commission basis.

probs a £10 note is a fair price anyone can learn to do realisim you gotta seperate yoursel from the pack to charge more, I saw a deaf guy selling his realisim drawings A3 10-15 quid

I would say at least $50 its very well drawn

if i wanted it, 50p-90p, not much more, i wouldn't give great artist painters like pablo more than £2.

hm, thirty or forty pounds, its very, VERY good!