What is your use-case? i.e. do you need to plug in a graphics card for mid-level gaming or will it just be a file server / HTPC / Plex transcoder? What do you have already? Storage? Socket 1155 cooler (spec)? 4 x 4Gb DDR3 or do you still need to buy a decent amount of RAM.
Not wanting to rain on your parade, but you may be chasing a complete money-pit of a project: last time I wanted to buy a board for my 2500K, it was an H61 ITX board (<£50) for an HTPC project and I got a free i5-3570T included.... performance was almost identical and the TDP was 45W versus 95W - so I could put a passive cooler on it. I decided I was never going to put that CPU into a case big enough to cool it properly, so ended up giving the 2500K away to a friend who needed to build a gaming PC for his younger brother and I threw in a Z68 ATX board that was unreliable ever time it was powered off (old capacitors) and a socket-damaged Z77 (both which he fixed!) - best piece of e-waste avoidance ever!!
Back to the question: In terms of those socket 1155 boards, you can definitely get lots on eBay. There are a handful of them sold as new, normally from China/HongKong (if you're still based in HK, this may be a valid option!). Be cautious though as these are usually still on the shelf 8 YEARS after it was discontinued because people are over-charging (£50+ for an H61 board, £120+ for lots of Z77s).
IMO "pre-owned / seller refurb" is FAR better value than new... usually comes with sufficient Paypal warranty to make sure you can plug it in and run it at least. If you are happy with ANY compatible motherboard, then there are some ITX and mini ATX H61 boards around for £20-£24 these days.
Wikipedia has a great little table for helping you pick a chipset for LGA115.
Avoid chasing after the Z77/Z68's unless you either find one at bargain price or desperately need to overclock - they're great boards, but most of the decent ones are utterly stupid money (even 2nd hand are still £75-£100!).
If you're intent on going ahead with this, then you might be better off looking for a complete dead-end chipset like the B65/Q65/Q67 as they don't support the IvyBridge 3xxx-series CPU's, so should be VERY cheap. H61/B75 would be my preferences for the budget options though as it gives you an option of an IvyBridge CPU later. Note that with - H61 you miss out on a few features (e.g. USB3 / SATA3 unless the board partner added their own hardware for that), hence the first question about use-case / other supporting hardware.