eBay is fine, relax. If the seller has an outstanding rating which they usually do, you have nothing to worry about.
Are you sure i can get it on ebay without getting scamed?
Look at the seller on ebay for the product you want to purchase. The person who is selling the item will have a rating and info showing how many sales they have done, etc. When they make good business, they have a good rating. If people sell things on ebay and do a poor job, customers will give them poor reviews.
I would think you should have no problem with ebay. Just make sure the seller is reliable.