Short acronym domain name perfectly suited for problem based learning situations.
The term PBL has excellent SEO stats and CPC value, and Estibot valuate the PBL.science domain name at $1600
Domain name registered until August, 2018, and renews at standard .science TLD rates (i.e. not premium renewal).
Make an offer here, or buy it now on Afternic.
The Estibot valuation is $1600 and GoValue $1295 - get the domain for much less!