> after witnessing you researching something to buy.
Amazon has never done that (different prices for different customers), their prices are the same for all users.
They didn't raise it because of anything you personally did.
Their prices just go up and down all the time randomly.
Leave the item in your shopping cart and check it daily (or more) and watch the price bounce around. You can use this to your advantage if you are not in a rush and wait for a good price. You can also use camelcamelcamel as a price tracker.