OK for those who want to know here is how to get the best price for a certain plant, if you clicked on here by accident I will move the plants name etc down the page so as not to spoil your fun............................................................

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..............................Ok here's how to get the best possible average and individual plant price. I'm not sure yet if the top individual plant price can be done with level 1 soil but you should be able to get a price in excess of $1000

1st if you are going for a high average price don't sell any plants until you can plant quite a few "money" plants at the same time, this helps attract visitors. You will also need, or be able to afford 2 yellow fertaliser bombs at least, use them just after planting the seeds and make sure you wait between applications for a few seconds.
If you have been careful you will have kept your pink bottle of quick grow formula and have enough money to buy some more. This speeds up the process a lot. (The blue growth formula should have been used on the other "magic" plants). Once you have applied the 1st pink bottle you should have some half mature plants,on the one's you can see, prune the two lower shoots on the stem, apply the second dose, now some of the plants should have flowers, make sure you fertalise these, hopefully you should get at least 15 seeds to get your next crop.
Prune the remaining bushes until you only have the flowers on the head of a bush, also make sure there are no dead shoots or leaves on any bushes, It does not seem to matter if there are a few missing shoots in the main bush head. If you can now apply a third pink growth bomb or wait until they all flower. Now harvest the seeds you need and sell all extra's seeds. You're Fabled lemon bushes should now sell for the best possible price.

With the right seeds i.e. spotted and citrus cactus and I think maranta's, if you're careful, its possible not to sell any plants until you have sold fabled lemon bushes for $1000+, that's how you can get very high average price's.
Oh you also need some of the other magic plants. Especially The golden berries of wealth as it makes people pay more for plants and the one that attracts visitors helps too.I trashed all my plants and used my blue growth chem (and more purchased by selling seeds and catching bugs) to nurse all the other magic plants to maturity. Use selling seeds and catching bugs to finance any chems you need.
As an exanple my average price is currently $1138 but I sold Lemon bushes lower than the max price a bit earlier on. Certainly with level 3 soil you should be able to clear all your plants at $1186, not sure if you can get prices quite this high with lower level soils as I didn't try it this high, I think I was getting at least $1138 though so it's worth trying. Hope this works for you too Have fun, happy pruning