Well eBay is Auction and Buy It Now based. By that you either bid for an item that has a starting price (low) and bid against others. They also have Buy It Now sales where it's just like buying online. I can't really show you where to find them as I don't know where you live. I can't provide you with a sale based in the US if you live outside of the US and the seller doesn't ship there. From what I see currently there is almost no 7750 video cards close to the $50. I see one that is close but requires payment as Paypal via direct bank transfer, and one a little bit more expensive. For example...
http://www.ebay.com/itm/PowerColor-Rade ... 46255da523
This item as I am posting this is at an auction price of $1.25 with 2 bids. The shipping is $9.50. If I bid $2 eBay would tell me if one of the bidders have a higher bid price then me. You then increase your bid to the highest you're willing to pay (total).
As of now it doesn't seem like the best time to buy. Most people are trying to sell 7750 for almost $100. I would pay ~$120 for a GTX 750. If you look for GT 640s on eBay you can find several for ~$50 and even cheaper. But you're sacrificing performance going with a GT 640. I would honestly wait for the best item and price. It sucks that you can't upgrade your power supply. I bought my 7850 for $65 because of a gift card I had on eBay. Even now you can find some auctions of 7850 with the prices at around $50-60 ending in the next 3 hours.
@jmmontoro
You seem to have a Radeon HD 5750. Unless 2K creates a miracle and optimizes the game really well, you won't be able to max 2K15 with that GPU. I would feel safe to say that you could play at minimum though, maybe a little higher. Think some more as we wait for the System Requirements.
columbusbobby23 wrote:I don't think you will be able to find one that doesn't need the 6-pin connector for additional power.
Actually most if not all 7750 should not require a 6-pin connector. That was what made that video card special.
agolden wrote:I max out 2K13/2K14 and almost all of my other games - I ordered these parts and had a friend assemble them for me back in February 2013. I'm a little worried next-gen 2K15 will be CPU-heavy though. Would like feedback!
I added links to the parts so you can see the specifics for the parts.
CPU: i3-3220 @ 3.3 ghz http://pcpartpicker.com/part/intel-cpu-bx80637i33220
GPU: XFX Radeon HD 7850 2GB Core Edition Video Card http://pcpartpicker.com/part/xfx-video-card-fx785acnl4
RAM: Mushkin Blackline 8GB (2 x 4GB) DDR3-1600 Memory http://pcpartpicker.com/part/mushkin-memory-996995
HDD (Only drive, I don't have an SSD): Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive http://pcpartpicker.com/part/seagate-in ... 31000524as
edit: GPU is running at stock speeds, not overclocked
also I run at 1080p on a 23 inch screen
Your GPU is roughly on par with the GPU in a PS4. I think you will be able to run medium-high settings in 2K15 but it's just a guess. Your RAM is fine as I have yet to see a game use 8GB of RAM. You don't need a SSD for gaming. It only helps with loads time so it will not improve FPS if you had an SSD. 7200RPM will be fine for gaming. Although an i3 is a Dual-Core, they do seem to perform better in most games (even newer games) compared to 4-8 Core AMD CPUs. Unless the game needs a lot of core/threads an i3 will probably be okay. At least with an LGA 1155 Socket motherboard you could always upgrade to an i5 or i7 down the line. At the least if things don't run so well you can use a lower resolution instead of the native 1080p on your monitor.