Class and Shopping

Hi, today was my first class in advance level, it was nice, because all the people speak very well, there are people from Colombia, Ecuador, Venezuela, Turquia, India, España. We were speaking about our cities and countries. After the class, I went to buy a Jacket, at this time the winter clothes are very cheap, my jacket cost 3 pounds, I don't know wheter it was a mistake because the seller said it's incredible. Later I went to the libraries because I wanted to buy a book and a dictionary, I bought the book "The girl with the dragon tattoo" from Stieg Larsson, it cost 5 pounds, it's very cheap, because in Colombia cost 15 pounds. I couldn't buy the dictionary because I don't know what is the best, either Longman or Oxford. I was searching on internet and the people said that both are good.