In order to be able to buy bitcoin on the best terms and with minimal time investment, the price of which will be the most favorable at this particular moment, it is necessary to pay attention to the following conditions that are provided on a special service:
how many types of currencies and which ones are available for exchange;
what is the size of the commission for services;
transaction methods - automatic mode, manual;
speed of transaction completion;
resource reliability; number of security algorithms;
availability of a loyalty program;
ability of an affiliate program;
user-friendliness of the interface;
availability of additional payments;
transaction limits;
need for registration, verification;
platform options (application, website, mobile version).
This is the whole set of criteria that are taken into account together, and not separately. Although there may be exceptions. For example, if you plan to only occasionally make not particularly large transactions, then there is no point in paying attention to the limits, since they will not be needed. If not particularly aggressive strategies are chosen, only the most popular types of cryptocurrencies, fiat money are involved, then only those that matter whether they will be in the list of the company's services.