Not sure if anyone else does MAF'less tunes outside the alpha-N software, but I doubt it. I have the Evolve Tune. Yeah it's expensive but I reckon other similar tunes would be similarly priced. Even if the US, the US guys commonly use the Evolve Tune if it's MAF'less. There are other non-MAF'less tunes for those replica airboxes that retain the MAF sensor.
Evolve CSL airbox w/Alpha-N tune | KW v2 | Vorshlag Camber Plates | WORK Equip 18x10/12 | Dixis Ti exhaust