Mine was similar; concrete screed floor in a 1960's built house. I filled in the worst holes and cracks with filler and then two coats of garage floor paint, circa £40 from Screwfix.
The first coat is painful and seems to take forever as it is filling holes and soaking into the concrete but after a few days to allow it to dry out thoroughly the second coat just flows on.
Admittedly it's not got a car in or on it but it's lasted over 12 months so far with reasonably heavy traffic i.e. I'm in there most days in work boots.
Before and after two coats pic below. For me it's worth a go at that price.
Mine was similar; concrete screed floor in a 1960's built house. I filled in the worst holes and cracks with filler and then two coats of garage floor paint, circa £40 from Screwfix.
The first coat is painful and seems to take forever as it is filling holes and soaking into the concrete but after a few days to allow it to dry out thoroughly the second coat just flows on.
Admittedly it's not got a car in or on it but it's lasted over 12 months so far with reasonably heavy traffic i.e. I'm in there most days in work boots.
Before and after two coats pic below. For me it's worth a go at that price.