I got scion wood for shiranui/dekopan/sumo 2 years ago. I topworked an existing in ground tree to it and to my surprise I got around 3 dozen fruit this year. Quality and size was nearly the same as grocery store fruit. 4 fruit weighed almost 4 lbs total. Here in Texas the citrus bud wood bureau is charging a $150 fee plus $35 shipping in addition to $3 a bud for out of state budwood. This wood came from Florida. So the wood cost $250! Happily I shared the expense with several others. Now the bud wood bureau is raising and selling it in state.
Several years earlier I grew out seedlings of sugar belle. I can’t get budwood for it in Texas. I gave seedlings to several friends and now 5+ years later the trees are blooming! I collected bud wood for sugar belle and just topworked a tree a few days ago from the bearing wood.
I live near Houston. After a few years of growing out a sumo seedling I stopped when I learned bud wood was available. Seedling trees can have thorns of 4 inches or so and may take 5+ years to start bearing fruit. However one of the guys I gave a seedling tree is still growing it out and now has flowers this year. However for you cold weather guys growing out a citrus seedling in a pot may never give fruit as the tree has to grow to a large size to start blooming. Picture of thorns is from my seedling sugar belle tree. When the tree gets big enough to bloom, 8+ feet or taller the thorns disappear on the top branches.