Classic order - operate on a budget of RUR20,000 (~USD309 at the moment of writing), preferably less, builder compensation included.
Build reason: client has several broken/nonfunctional/partial systems at home, wants to upgrade. OK, been there, done that, made it my profession.

Sticking point: client has very little money and cannot overspend.

End result: build complete for RUR15,600 (~USD241).

Hand-me-downs to be included in the build:
- Socket 1156 Intel Core i3-530 (2.93GHz)
- Old Microlab EATX case with front door missing
- Old Barracuda 500Gig drive
- Some usb2.0 cardreader in 3.5 slot (Alcor)
- LG DVD Burner (tray stuck)
- CROWN JEWEL: ZOTAC GTX470
- 2 sticks of ddr3-1333 2gig RAM (german takeMS brand, listed in the build as Generic, because well, it is!)

Purchases list:
- refurbished ACER H57H-AM2 V:2.0 motherboard from my friendly physics professor-turned-tinkerer, with IO shield
- simple and old Deepcool cooler (for some reason, cooler had a 2mm gap between itself and the IHS when connected to its backplate... solved by "spring-loading" the backplate with a paper towel)
- new SmartBuy Splash3 Sata SSD (240Gb, obviously using a stand-in generic chinese brand as adding all this obscure stuff is a pain)

Taken from the scrapheap of doom and gloom:

- 2 sticks of 2gig Partiot DDR3-1600 RAM (one was even single-rank!)
- Thermaltake TR2 550W PSU (required soldering in a new 140mm fan, old was askew, replacement taken from an old pile of AZZA case fans I had from my glory days)