New Coolant Housing/Recovery Bottle??

Hey

I just discovered today that my coolant reservoir tank fell off its little hanger thing and ended up getting a huge hole melted into it...I have a few questions about what to do next...

1) I've tried looking around for another one but I can't seem to find one...is there a specific name for this part that I'm supposed to look up to find it?

2) I think I may have found something suitable, (http://www.zcarsource.com/content/p/9/pid/54932/catid/7691_8764/Coolant_Recovery_Bottle_75_78_used) but it's $95...is it supposed to be that expensive?