The prices of restaurants and dishes in Qingtang Bay, Haidian, Beijing are relatively high, but there are still some cheap and delicious choices. The following are the suggested options, which are divided into three time periods: breakfast, lunch and dinner. I hope it can help you.

Breakfast:

1. Time Dumpling House: This jiaozi store is affordable, and you can get a hearty breakfast for twenty or thirty yuan. Recommend their boiled jiaozi and red oil fried hands.

2. No.1 Food City: This is a food gathering shop, which serves many different types of breakfast, such as soybean milk fried dough sticks, steamed stuffed buns, egg tarts and so on. The average cost per person is about ten yuan.

3. Raffles Burger: If you like western breakfast, this fast food restaurant is a good choice. Their hamburgers are cheap, and you can get a set meal of hamburgers and French fries for about 2 yuan.

Lunch:

1. Gathering from all directions: This is a chain store mainly engaged in Sichuan cuisine, with branches near Qingtang Bay. Their food tastes good and the price is affordable, and the average person only needs about 5 yuan for lunch.

2. Huajia Yiyuan: This is a traditional Beijing cuisine restaurant with a branch near Qingtang Bay. Their family's set meal is more cost-effective, and each person can taste authentic Beijing food at a cost of about 8 yuan.

3. Xibei Youmian Village: If you love pasta, this is a good choice. Their beef, Lamian Noodles and Zhajiang Noodles, tastes very good, and each person only needs about 4 yuan on average.

Dinner:

1. Barbecue at Cheap Shop: This is a self-service barbecue shop, with relatively low price (7-8 yuan per capita) and good food taste. It is recommended to book in advance, because it is often full.

2. Golden Million Hotpot: This is a hot pot restaurant with branches in Qingtangwan business circle. The price of their home is relatively low (about 1 yuan per person on average), and it is very enjoyable to eat.

3. Lanzhou Lamian Noodles: This is a fast food chain store all over the country. Although the name is Lamian Noodles, it actually provides a variety of pasta choices, and the price is super cheap, and each person can solve the dinner for only a dozen yuan.

The above are personal recommendations for some restaurants with relatively low prices in Qingtangwan District, Haidian District, Beijing. It is suggested to choose according to personal tastes and preferences.