I agree Tim but..
you don't need to use a pan and a lid.
You don't need a stove or at least a hot plate
Each steamer basket holds so much more
Being 3 tiered ou can put meat in one , spuds in another and green veggies in another, or reheat sponge or rice pudding as everything else is cooking, thereby doing dessert at the same time
You can use the fluid at the bottom for stock if you wish
You can use it without putting on the stove so very convenient, uses less power and takes up less space than several pans if cooking multiple stuff.
The baskets just rinse out after use, straight under the tap and on the draining board in a flash
There is no risk of limescale residue being left in a pan which can build up and taint food if the pan is used for something else .
And... it can be used to blanch veggies for the freezer
This is one of the many kitchen gadgets out there I use constantly.
XX Jeannine