Even at your best, your service, coverage, and ability to follow the law is terrible.
Never mind the blatant noncompliance with the unlock law, ensuring any money spent on a phone is sunk cost. Especially when resale is also taking a hit because any boost provisioned phones won't work even on vanilla sprint, much less any other network. At best, any sprint version of a phone takes an automatic 1/3 hit in value because sprint is the tumblr feminist special snowflake of the wireless carriers in the US, using frequencies nobody else does. A locked phone on their network is basically trash because it won't work anywhere else.
The six months of agony I went through to save up for a new phone to go elsewhere were exactly that. Especially as the signal I did have would drop calls like they were those rocks that spew from erupting volcanoes. Further sabotaging my ability to make enough money to leave.