Tag sales, garage sales, Craig's list.
Bicycles now are modern, light and cheap.
One place where you can buy a good cheap bicycle is a yard sale. Yard sales often have bicycles for sale.
HED wheels are used for bicycles and you can find some reviews for them online at Amazon and some businesses that sell bicycles and accessories. You can find reviews from customers such as yourself.
at a bycicle shop
Bicycles are often - but not always - made of metal because its strong enough, light enough and cheap enough.
You can find a cheap used backhoe online at ebay or amazon
there are advantages to bicycles too
There are many stores that one can find ladies' bicycles to buy. Examples of stores that one can find ladies bicycles include Target, Walmart, and ShopKo.
You can find cheap used educational toys at your local thrift store. It's a great place to find bargains.
Bicycles are STILL used.
You can find a cheap used corvette from the VetteFinders website. Alternatively, you can also purchase these vehicles cheap from auction websites such as eBay and classifieds such as Craigslist.
The best places to find things that are cheap and used are amazon.com and also eBay.com. These two websites, especially eBay, specialized in used items sold at a cheap price.