1. According to the official website of Tai'an RT-Mart, Tai'an RT-Mart parking lot charging standard is free parking for 2 hours with a shopping receipt for purchases of more than 50 yuan (including 50 yuan).

2. Free parking for 1 hour if the price is less than 50 yuan. For vehicles parked beyond the free time limit and without shopping, a parking fee of 4 yuan/hour will be charged.