If you don't have your own set of skis, the ski rentals in Chamonix-Mont-Blanc are at your disposal. In addition, you can always contact the local SKY centers, which will help you with your equipment and keep it in good condition.
Ski and snowboard rentals are available in Chamonix-Mont-Blanc and the surrounding resort centers. A large one is near the glacier itself, at the Grands Montets elevator.
Skiing and mountaineering equipment can be purchased here and here.
Modern brand gear rentals are offered by there and there, and there's an option to order children's sizes. The cost of the rental directly depends on the category of the order. The average price is 60-120 EUR for an adult, and 40-70 EUR for a child. A full set of snowboarding equipment will cost you 110-130 EUR.
