Many websites can have misleading or incorrect information. One has to consider many factors when determining the value of the home. Paying Cash is helpful because it eliminates many fees at the closing table so the seller likes that and sees they are saving money in that regard.
Plus this avoids the need for a bank appraiser to set the value so there is no need for further negotiation if the house is undervalued beneath the agreed selling price.
One makes your money on the purchase of the home because you cannot determine the market when you choose/need to sell.
Lastly, most of the websites do not show if there were any seller concessions involved in the sale of the home which is something else that is factored in.
I suggest you talk with several Realtors to discuss YOUR needs and see who you feel is experienced, informed and someone you can trust. We work for you and it is the seller / builder that pays for this service in nearly every case.
Very best regards
Keller Williams Realty