I've had a look. He doesn't do things by halves, does he?!
I'll be honest and say that in an ideal situation I would refer him to an orthopod for surgery. Having said that, it's not unusual for this option to be unavailable in this sort of case and I would be reasonably optimistic that he could recover good mobility without specialised pelvic surgery.
Firstly the dislocation needs to be sorted out, because as time passes the likelihood of it needing surgical intervention increases. Last resort is surgically correcting it or removing the femoral head, neither of which are very expensive procedures (relatively!).
The left hand socket is a goner without major pelvic surgery, but I'd be quite confident that excising the femoral head leaving him with a 'false joint' would give an adequate return to function as the fracture healed.
This just leaves the ilium to worry about. It is quite displaced and the whole pelvis is skewed as a result, meaning future constipation is a concern. However, I would be tempted to cage rest him for a good 6-8 weeks in the hope that it would heal without surgery. The caveat is that he might in the future develop a complication called megacolon which can be really unpleasant.
So basically, if you came to us with this problem, and no cash, we'd excise the left femoral head, try to reduce, pin or toggle the right hip, and then shut him in a cage for a few weeks and cross our fingers. I'd estimate the total cost would not be in excess of £800, but we are a rural mixed practice and so probably charge less than a dedicated small animal hospital.
I hope he's feeling well today, and that you manage to find a solution to your difficulties.