I think users should be able to buy arena tickets with crowns. If you look in the shop where arena tickets are used you have to be a certain rank to buy them so people cant say "Well then people can just buy the cool and rare stuff without doing the work"
Arena tickets should be priced like this
10 Arena Tickets = 100 crowns 100 AT = 1000 crowns 1000 AT = 5000 crowns
Well how about you can only buy up to 1000 arena tickets at a time Like you will buy 1000 then when you spend some it will say you have 950 left so you can now buy 50 more. so you cant got over that 1000 arena ticket buys