A monitor shouldn't cost a few grand. That defeats the purpose of a desktop computer: thrift. The idea is low cost replaceable parts, serviceable by someone with only slightly better than average technical skills.
Here is an example:
This
http://www.provantage.com/hewlett-pa...ource=googleps
Plus
http://www.microcenter.com/product/3...1155_Processor
Gets you a real gee-whiz computer. The HP Pro 4300 comes with a crappy processor, but the motherboard has an LGA 1155 socket, which supports an Ivy Bridge i7 processor. When it's all said and done, you've spend about $750 for quite a computer. That even includes the operating system. You can increase the RAM up to 16GB if desired.