Seeds are much more profitable than plants.
Much much more, especially if you want to stay small and don't plan on employing staff.
Only a good looking plant will sell, and its only the perfect size for a limited time. Shipping, pots and soil cost too.
Plus the refunds and replacements for lost and DOA which is much higher when dealing in plants.
A $5-$7 profit is a $25 plant for me on eBay.
Hardly worth the effort.
A sad crappy looking unloved bug eaten plant, will produce a heap of seed regardless.
How many seeds are in a pumpkin?
How many packs of seed is that, VS maybe $2 for the actual seedling plant or the pumpkin fruit.
Seeds bro.
I wouldn't bother wholesaling to nurseries either, as you only get a buck a plant(and half that is costs) and they want 100+ at a time.
All that space and time for bugger all.
But retail in your own website and/or eBay you sell say 16 little plants for $25, its more profit, its less time and work, and most importantly, less room so you can have more varieties.
Then as you are growing more stuff, you are relying on the supermarket less, so your actual needs are just the rent or mortgage really.
Barter a load of fruit and vegies with the dude at the petrol station, for your weekly fuel.
That's about all you need.
Its a holiday then not a job.
And just about every $ earned is a $ saved, as there is nothing you need to spend it on.
If you act professionally, but not cold and aloof, and go out of your way to make folks happy, word spreads and soon you will have more sales than you can or want to handle.
Won't take long,(especially with your range of plants) and just ignore the profits in the beginning.
Focus on making other folks happy with theirs plants seed service or whatever.
Then at worst, all you have done is make others happy so the good karma will catch up anyway, even if its not in an immediately monetary form.
Money always comes when you need it.
Seriously.
Every single time you need it, an opportunity comes.