As for pricing, your suggestion of $20,000 x 98 seems high for a sliver of road frontage to add a turn lane. Granted, you have the right to try to sell your property for whatever you think it is worth (unless it is a government taking for market value, or if you just don’t own the property in the first place), but that does not mean someone will buy it if it is overpriced. The developer likely has other options. Usually valuations in a situation like this are based on an appraised (or negotiated) value per acre or square foot, and then a survey determines the precise size of the sliver of land that is being conveyed at that rate.
Since it is near the New Year, please allow me to use this illustration. Many people make a resolution to diet and exercise to lose weight in the New Year. They may buy a new piece of equipment and some new workout clothes. They go hard for a couple of weeks, and slowly excuses begin to interrupt the routine and eventually there is no real progress. Then the person can say, “I tried the Bowflex for a while, but it didn’t really work for me.” The truth is, they didn’t do what Bowflex recommends and therefore they did not achieve the desired result.
I've seen a number of properties that are virtually useless due to their size and shape. I remember on one occasion, I came across a parcel of land that was 5 feet wide and 900 feet long. I've also seen properties that were 10 feet by 10 feet. If you see a parcel of land with an odd shape, use your common sense. If you can't think of a legitimate use for a property with its given dimensions – you'll probably want to think twice before buying it.

Hi Giselle – all of the properties I’ve bought have been SUPER cheap, so I’ve always just paid with cash. I have done plenty of seller financing when I’ve sold properties, but not so much when I’m buying. However, what you’re saying could certainly be a feasible way to get properties without taking out a hard money loan – you’d just have to find a seller who is willing to work with this kind of arrangement and then hold their hand to make sure they understand the process and that everything is being done correctly (paperwork, recording, processing of payments). There are a lot of additional moving pieces when seller financing enters the picture, but for the right deal, it could absolutely be worth all extra effort.

After identifying your likely buyers, try to think like them so you can focus your message to convey what they need to know about your property. Have information ready about schools, shopping and other nearby amenities. For developable land you can be prepared with zoning information and insight from local authorities about the location and capacity of water and sewer service. Each property is different, so customize your information for your situation and your targeted buyers.