When I have Economics as price now it says I don't have enough resources.

This have worked before?

Example:

"TopTier": {
"Price": {
"metal.refined": {
"amount": 15,
"skinId": -1
},
"Economics": {
"amount": 100,
"skinId": -1
}
},
"Refund": {
"metal.refined": {
"amount": 10,
"skinId": -1
}
}
}