They are roughly going to be worth $1 to $2 each. A few specific ones (high values) will be worth more. Your library will have a postage stamp catalog and there are online sites where pricing can be found.
The price of patio furniture covers will depend on the type of cover and how many pieces you have. In general, a six piece covering set should cost 100 to 200 dollars.
without
general bonding
These covers are not free however some sites do provide free shipping when purchasing tonneau covers. Most of the nice covers cost between 200 and 400 dollars.
Amazon tends to carry a wide range of products and they do carry spa covers at a cheap price of forty five dollars, but they do have more expensive ones at around two hundred dollars.
Angrybirds.com has angry birds iPhone and iPod touch covers for sale. It's like 20.00 dollars.
Most featherbeds are sold without covers. You need to purchase the cover separately.
Cheap chair covers cost about two dollars to purchase. The cheapest materials to look for in chair covers are satin and polyester, which still come in many colors.
The starting price for a classic cover custom photo book on Winkflash is 39.95 dollars for the first twenty pages and 1.5 dollars for every additional page. There is a choice of vinyl or sports covers without additional payment.
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camel
You can buy quality seat covers for $30 or less at Target. They carry a variety of different colours and styles. You can also find seat covers at Halfords.