Don't spend premium top dollar on a milwaukee or bluelab pen if you don't plan to keep your pen in the appropriate storing solution you need to buy, and the fancy expensive cleaning solution for the probe. Probe issues are number 1 reason for cheap pen failures. Without these products, forget any advantage of a good pen, and say good buy to their warranty.
Sadly, the cost of these solution are more than the one of a basic cheap pen found on amazon.