What license do I have to buy (4PSA products for Plesk)?
License limits for 4PSA products are counted based on the number of domains you have in Plesk. The 30 domains license will work as long as you have 30 or less domains in Plesk, the 300 domains license will work as long as you have 300 or less domains in Plesk. The unlimited domains license has no domain limitation.
