The initial price of tokens is always really high due to being new, either way, the team running the platform is committed to the project, they wouldn't have locked their tokens for 6 more months if they wanted to just get a quick profit out of the project. They have also announced the launch of the STP Ecosystem (https://medium.com/@StandardTokenizationProtocol/introducing-the-stp-ecosystem-84491865a775), which counts with pretty big partners like Ontology, BitMax, Block72 and many others.
But there are also a number of projects whose coin prices increased instead of decreased upon entering the market. The pattern of dumping of coins right away after the coins are listed on exchanges is an indication that there are more investors who are willing to let go of their coins with very little to no profit than investors who are willing to buy as soon as the coins are made available to the public. STPT is still more than 70% below the initial price. Token locking is very normal. Majority of projects are doing that.