Problem #1: It's hard for you to decide who are the reputable developers building the best Jaco Beach condo homes because their advertising is focused locally and naturally, it's in Spanish.
Problem #2: Remember that in Jaco Beach, a condo could be a US$75K apartment or a US$5 million stand alone home but the sad fact of the matter is when you are looking for a Jaco Beach condo, most agents will not return your phone calls or reply to your emails in a timely fashion.
Problem #3: If you are in the market for an affordable Jaco Beach condo and 'if' you are able to find a trustworthy real estate agent, they will not want to show you affordable homes because many Costa Rican real estate developers building affordable homes have their own in-house sales staff and some refuse to pay commissions to independent agents!
Hidden Costa Rica real estate gems that you would never normally find but now you will, because now you have an 'insider' who knows the Costa Rica condo market well... Heck! He wrote the book about How To Buy Costa Rica Real Estate Without Losing Your Camisa.