Yep, which is why it isn't easy to do. But if one is looking for the best possible economic deal, buy the cheapest resort with the cheapest dues, and then - as often as you can - switch to the cheapest point night rooms.
BLT has cheap dues, but because their points per night is higher, staying there costs as much as having BCV as your home resort and staying there - if you are just looking at dues per night and ignoring purchase price. But you could buy SSR for 5.86 in dues and stay at OKW for 10 points a night rather than SSRs 11 - that's a cheaper deal than owning OKW (on dues alone) and staying there, or owning SSR and staying there - and OKW isn't hard to book. However, you should NOT plan on owning SSR and snagging the 9 point a night value studio at VAKL or a 10 point per night BWV Standard view - that isn't happening with any regularity.
BLT has low dues - at 5.92 a point, but its cheapest room is 14 points a night (this is all studio random weeknight in January). So SSR costs you $64.46 in dues per night to own and stay there, BLT costs you $82.88 dues per night to own and stay there if you can get that standard view room - which is hard to get even if you own sometimes - the 17 point a night Lake View is more bookable - $100.64 a night. OKW costs you $67.20 to own and stay there. But own SSR and stay at OKW and your dues cost per night for that stay is $58.60 - cheaper than the SSR owner can stay at SSR, and cheaper than the OKW owner stays at OKW.
It came up years ago over the difference between BCV and BWV in dues. BCV has always had slightly cheaper dues - for 2018 its 6.44 vs. BWV 6.55. If you stay that night in January at your home resort, BCV owners will spend $96.60 dues only. BWV owners in a preferred BW view will spend $98.25. BWV owners who manage to book standard view are staying for $65.50.
A lot of people look at dues and per point purchase price, but don't consider how many points per night it takes to stay somewhere.
The worst "deal" is to own an expensive dues resort - say you bought VB because it was cheap and are paying $8.53 in dues. Then you decide to splurge on a 20 point per night studio at GFV or the Poly. You'll pay $170.60 - dues only - for that night. Not a bad deal when you compare rack rates if you see your purchase price as sunk - but a lot more than the $58.60 the SSR owner is paying to stay at OKW. But hey, its a splurge. And once you own the points, you should do what makes you happiest. But when you are buying the points - this is a different way to look at it.