Translation of rekapitulieren

I hope you could understand my last letter to you. You see, when I write in Spanish I am not very confident. I always question myself and each and every sentence takes about fifteen minutes.
I just came back from Switzerland. Please give me a week to read the material you sent me. How was your time in Switzerland? Rani already asked me yesterday. Tell me when and where. I'll keep Tuesday free.
The American (his name was Jeffrey) meant that this is the hour where usually the price of goods went down as the sellers were under pressure and did not want to return with the product.