Discounted Acoustic Guitars
Discounted acoustic guitars can be found on many sites on the internet.
When buying from ebay the secret is always to check out the vendor's overall feedback score and recent trading feedback.
To find heavily discounted guitars then the best people to buy from are personal sellers. They will often let their items go for no reserve, and sometimes, if no-one has spotted it you can pick up great bargains (lookout for misspellings when guitar hunting)
However, business sellers can also discount guitars and they may offer more safety with regards to returned guitars.
If something is wrong with your purchase when it arrives then it may be worth paying a little more knowing that the return will be a lot smoother with a business seller (usually).
Start your search by filtering with the guitar make and model and then sort by ending soonest. There may be some bargains waiting to be picked up very soon.
As with most things in life timing is everything. If the seller is naive then they may have a closing time set for some unreasonable hour when other buyers will simply not be around to bid. The discounts then can indeed be very large.
Lookup "sniping" programs on Google for ways to bid when you are asleep for example.