An electronic shop offers smartphones for $300 each, personal computers for $500 more than smartphones, and advanced tablets for the sum of the prices of a smartphone and personal computer. How much do you have to pay to buy one of each of the three mentioned products? Think carefully first, then make a decision:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The price of a personal computer is $300 + $500 = $800. The price of an advanced tablet would be $300 + $800 = $1100. To buy each of these products, you would have to pay $300 + $800 + $1100 = $2200. So, the answer is 2200.