Here are some prices I reckon you could aim for, I believe you could get good, if not "the best" for these prices:
Spikes. Hard one because there is less choice. Either your looking at 70-100 quid for decent boots, of if you can getaway with it cheap ones from about 25 quid. You might get lucky on ebay if you have small feet
Pads. 40 quid, loads about at this price that are decent. Have a look and see if there are any old models kicking around, always a bargain.
Thigh pads. Ten quid each.
Gloves like pads, 20-30 quod
Lid, prob, 30 to 40 quid. Might be harder to get hold of, not sure. Look for gm,gray nics , etc. might get a bargain.
Good luck