Error updating prices when Fee = 100%, Net Price = $0, Sale Price = $1

[rbarreca]

Describe the bug
If you try to set product price with custom Fee % and net price = $0 (say it's a supplier freebie or something but buyer still pays) you'll get an app error

To Reproduce
Steps to reproduce the behavior:

1. Log in as market manager
2. Go to Prices tab for a product
3. Click Edit
4. Set Fee % to Product and value = 100
5. Set Net Price = 0
6. Set Sale Price = 1
7. Click Save
8. See error like PG::NumericValueOutOfRange: ERROR: numeric field overflow DETAIL: A field with precision 5, scale 3 must round to an absolute value less than 10^2. : UPDATE "prices" SET "net_price" = $1, "product_fee_pct" = $2, "sale_price" = $3, "updated_at" = $4 WHERE "prices"."id" = 200782

Expected behavior
This would save and work in the system correctly or at least provide a valid error message in short-term (if a $0.00 net price product is too high of effort to do at this time).

Screenshots

Rollbar instances

• https://rollbar.com/LocalOrbit/Local-Orbit/items/635/occurrences/57591432054/