The idea is sound. You get beer from small batch producers in Belgium. Beer that is likely not available in Ireland or the UK. If you are an armchair beer ticker then it's ideal.
You are clearly paying a premium for the service because of the shipping charges. If my maths are correct, the average price for a bottle of 330ml beer is about €4.61 each with this service. Not cheap but then, you would likely have to travel to Belgium to find most of this beer and even then, it might not be an easy task.
The real benefit here is as a gift. Something for that person who has everything. Someone like me actually.