The last time i went shopping

The last time i went shopping for clothes, I went with my best friend. She named Mary Her name is Mary (best) or she is named Mary or she is called Mary. I hate shopping with my mother because I like looking at shop windows but my mother hates it. In fact, she isn’t very patient but my friend is different. On the other hand, my friend always tell me when she thinks a colour doesn’t suit me. But my sister says “ok, ok, it’s perfect, you don’t need to try on clothes, come on, come on” which is stressful. she nees to learn how to keep calm please.
The last time I went shopping, I don’t remember very well, but I think I bought a plain white cotton shirt , a yellow top, a light blue silk dress and a blue denim coat. I love my new denim coat. I didn’t want to pay more than 50 €, so, I could pay in cash but I didn't have enough money (on me)and I paid by (my) credit card. I paid about 90 €. In general, I go shopping once or twice a month. Depending on the day, I prefer to shop at shopping centers or in local shops. In fact, my cousin has a clothes shop in Madrid. it’s on Javier Paul street near Zara’s. She has bargains in outlet products. She has a 30% discount on some products. In general, i only go shopping when there are discounts, bargains or sales. I haven’t got a lot of money and i am also saving money to pay my fees at university. I think is more cheaper to buy in Toledo and you have great diversity of products.

"more cheaper" no es correcto, no haces "comparaciones dobles" en inglés.  "Cheaper"; unos adjectivos no puedes añadir "-er"  en estos casos, dices