A portable microscope that attaches to your computer will typically run from 100 dollars to several thousand dollars depending on the quality of the optics used.
Tomtom portable gps systems' price range based on the different models and makes. Currently they range from $69-$149.
The typical price for an Olympus Biological Microscope is approximately $3500. The price will range depending on the size and function capability. Wider price ranges can be found if buying used or in bulk.
Compact portable speakers vary in price range. This depends on the make and model, as well as if they're used or new. Check ebay.com or amazon.com for cheap options.
The current total price of a table top Atomic Force Microscope is approximately $26,670.00 (USD). The larger models of the Atomic Force Microscope have a price range of $30,000.00 without accessories and add-ons.
Generic portable generators can vary in price based on size. The average portable generator will run you between 1600 and 2500 dollars. They can go up to 5,000 and higher though.
If price is important, I'd suggest the Hoover Portable Canister Vacuum. It's going to come in under your price range, and is very light and portable.
The price on a portable music keyboard can vary greatly depending on factors such as the brand name, the quality, and the features included. Typically one could expect to pay between $75 and $300 on a portable keyboard.
Price of portable dvd recorders range from the lower end of around $70 to the higher end of around $150. The average price you will pay for a good quality dvd recorder is around $110.
The price range is very wide. There are some that are extremely cheap and it can go up to thousands of dollars. It really depends on what you want which will decipher what you will pay.
Amazon.com has a variety of portable fans over a broad range of prices, depending on the size and the features. Amazon gift cards are available in any amount, so the amount of the gift card will determine the price range of the fan. Go to www.amazon.com to browse
Portable movie players have become much more affordable in the last few years. You can now buy a a dual screen portable dvd player on amazon.com for as little as $100.
The average cost for a portable battery depends on many things. It depends on where you purchase it and what quality battery jumper it is, They can range in price from $40.00 up to $200.00