buy a welder (for close to the same price) and make your own goal with a welder leftover???
Or, if you'd like not to burn your house down, see if you can sweet-talk your local high school (probably the school you attended) into getting the metal-shop students to make one if you provide the supplies. I know that my old high school had a ton of its athletic stuff done by the metalwork students (4 hockey nets, 2 full-size soccer nets, the most of the weight room equipment) and it was all very nice quality. All you'd need to do is get them some steel tubing and some netting (which might be the hard part unless your local sports store sells replacement netting) and diagram what you want done.
I'm sure if the shop teacher is nice enough he wouldn't mind giving you the end result since you're contributing to the students' learning.
At my local sports authority, I picked one up for $100 (no sale). I find it quite durable and it has wheels which are very convenient. I bought the one year warranty for 10 extra bucks which insures your goal from any harm (rips, screws falling out). My friend also has two of these and after some very very heavy abuse the screw fell out of the wheel which was no big deal. The netting is very durable as well. I highly recommend this goal. Overall, it is a great goal for its price.
IDS pucks are very good, I used to use balls all the time but an IDS puck on an asphalt driveway slides nicely.
For asphalt, I suggest Millenium Propucks. IDS Proshots, Rocket pucks, Franklin Commanders, CCM, etc pucks all tend to lose their slide fast. Propucks work very well on hard surfaces but are borderline useless on sportcourt.