Run Lehigh’s NPC to get an estimate of costs. Not sure if merit is part of the NPC though. https://npc.collegeboard.org/app/lehigh
Take a look at Lehigh’s CDS section H, for info on non-need based aid. Looks like 55 students from class of 2023 without financial need received non-need based aid (not including athletic scholarships). https://oirsa.lehigh.edu/common-data-set