Obviously, if a clock is hand carved, very old, and in great shape, it will end up bringing in lots of bidders who cruise the listings looking for bargains. If its a mass-produced, relatively modern piece of equipment you might end up snagging an enjoyable, delightful, accurate and cheap cuckoo clock for very little money. 

You have to do your homework, researching brand names so you know what youre buying and roughly how much you should be paying for it.  Find a clock that suits you out of the hundreds constantly being listed on the world famous auction site, determine how much you are willing to pay (dont fail to remember to variable in shipping and handling charges as well as insurance fees) and stick to it.  If the bidding goes higher than your limit, drop out and wait for a similar merchandise to appear on the site.

There are also bargains to be found on many of the web sites that specialize in selling cuckoo clocks as well as on sites that sell clocks of all kinds.  The greater the selection of clocks that a company sells, the greater the bargains will be for closeouts, inventory reduction sales and promotional items.  Again, do your homework.  Know what you are buying beforehand and then try your best to contruct the deal you want for that item. 

Its best to buy your cuckoo clock, especially if its a cheap cuckoo clock, from a web page or business that offers a warranty on the purchase, and from businesses that also offer repair services.  This way, if the merchandise is defective in any way when you receive it, youll have recourse.  Also, if it should stop working somewhere down the road, the company you purchased it may be able to offer repairs.   In the interest of developing and maintaining a sizeably efficient reputation and attracting repeat business from customers, the company should do right by repairing the product you bought from them at the cheapest possible cost. Here are some places to initial : cuckookingdom.com, cuckooclockmall.com, and discount-clocks.com