Residential last mile ISPs are highly unlikely to offer bgp as a service. What you'll get is default route DIA.
If you actually do find a cooperative fiber based last mile ISP that will set up bgp with you in your house, I'd be shocked if the service quotation for such a custom weird thing doesn't start from a floor price of $400 a month.
If you actually do find a cooperative fiber based last mile ISP that will set up bgp with you in your house, I'd be shocked if the service quotation for such a custom weird thing doesn't start from a floor price of $400 a month.