Teacher provides feedback, and most online resources are not. Feedback and corrections are extremely important in physical practices like dance, martial arts, car driving etc. One can avoid personal trainer/teacher in mental practices but it's almost required for physical.
Canned beans must be cooked properly, without that they are bland. I usually buy cans of beans without any sauce, species or tomato, then use them as an ingredient in cooking with meat, vegetables and proper seasoning. Also they are great in salads.
There are some amulet-like things that could be used for detector testings, they were freely available on aliexpress a few years ago. Also there are some radioactive "trithium" keychains that may contain absolutely anything but tritium.
And that list is not complete, I use at lease two additional switches in development instance of chrome: --ignore-certificate-errors --ignore-ssl-errors
The only expensive part in Moscow is home/appartment. Everything else is cheaper than in other cities. Moscow is a major logistic hub of whole country, everything is here. Food, entertainment, great public transport system.
In russian satire London is often depicted as a laundry/safe haven for stupid and ignorant oligarchs from esUSSR. It's more a status symbol that something really useful.
Plus this, any social dance with large friendly community is great. Take some lessons and visit all dancing parties. It's amazing and refreshing experience that provide a lot of new positive emotions.