Help! $2400 for a shower enclosure?

[Matt Jones]

I am nearing the end of my first non live-in flip and I am trying to finish up the details without totally blowing my budget.  I could not find anyone to do a tiled shower base so I bought a pan and tiled the walls.  Only one side of the shower pan had a threshold so I built a small wall to cover one side of the pan where there would be no wall and now I need a custom shower enclosure.  I've gotten back quotes of $1540 for a framed enclosure or $2377 for a frameless but that seems ridiculously high to me.  Has anyone run into this problem before?  Had success ordering a custom enclosure online, if so from where? Or, do you have any alternative solutions that might save me some money on this item?

Don't worry, the window has been painted and shower grouted since I took the picture. 

Any help would be much appreciated!