The point in selling a tower is to reduce the opex and capex costs for the tower only.
Teleco do not do well in leasing up their towers. So let’s say it cost 35k to maintain the tower. If you go to an independent towerco. They may charge 25k per month. Then they get other tenants on site like...
They usually vandalise the cabinets and batteries on the ground which is owned by the MNO unless MNOs opt for power as a service which attracts an extra fee.
Got an Airbnb place in the North West just after covid. It was great buy and a niche property. Got it for 400k and getting around 12k per month net of payout commissions from Airbnb.
The care taker is fairly expensive at 30% but the lady takes care of everything and she’s really good and also...
Barter. Ask them if they need anything that uses a credit card. Like payment of electricity, online shopping instead of eft.
Other ways cost a % as transaction fee.
In a year or two you should be fine. They will start escalating your premium more than your benefit and then it should match or even exceed your benefits.