Most local dealers around me only order 4WD units. I haven't seen a 2WD LS on any lots but dealers in my area are not on my normal travel route. My area is snow country where 4WD is usually needed.
If you only need a tractor for mowing, shredding, gardening, spraying, and on occasion perform front end loader applications, you may not need 4-wheel drive. There are people in my area here that do use 2WD tractors plowing snow but the majority of buyers want the 4WD. I'm sure 2WD's are available to your dealer but it may be your dealer sells 10-20 4WD tractors for every 2WD they sell so he just doesn't order them and want them sitting on the lot for a long time. If you really want a 2WD check with another dealer to see if they could order one for you.