Who ever gave you those prices are trying to rip you off.you should be able to get both axles from Autozone or online for no more than $150(with the core charge),and a new oil pan should run you no more than about $100.

The other parts I'm not 100% sure on the cost but you can find them here.
http://www.autopartswarehouse.com/honda~rep.html
They seem to be raping you with labor.I had one of my axles put in for $50,so with the cost of the part it came out to around $130.Now if you multiply that by 2,then you see that there is something wrong.

It would seem that your best bet is to try to find a place that might be a little low key,or a place that mods cars because you can generally get better prices for labor with them,especially in or around bigger cities.

Good luck.