Stamp dispensers can be purchased from various postal companies, such as the United States Postal Service. They can also be purchased from online mega-retailers such as eBay or Amazon.
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The Bobrick soap dispenser does come with a full dispenser of soap. You can also buy refills from the Bobrick website.
You can buy soap in a box for a soap dispenser at a retail for instance via the Internet or at the chemist shop.
There are many places where one could buy a packing tape dispenser. Just a few places where you could purchase a packing tape dispenser are eBay, Amazon, and Walmart.
Check out the Towa APN-30 label dispenser
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You can buy a mini water dispenser from any online site that offers them. You can also buy them from your local water company or hardware store that sells them.
You can order a commercial toilet paper dispenser online from a website such as www.globalindustrial.com. You can also purchase a new or used commercial toilet paper dispenser from Amazon.com.
There is a new soap dispenser I have seen advertised. The dispenser is called "Soap Magic". It is a hands free dispenser. It works with a sensor when you put your hands under it. You can buy it at getsoapmagic.com. The cost is $19.99.
The cost of a soap dispenser depends greatly on the brand and what the dispenser is made of. Plastic soap dispensers can be bought for a dollar and silver dispensers can be around a hundred dollars.
You can find a soda fountain dispenser at www.sodabarsystem.com/. E-Bay also has soda fountain dispensers to bid for and to buy.