Pather is spot on.
It's not just the cost, but the "establishment period you need to consider.
(FYI - mud isn't good to strike seeds. You need a high quality and fine potting mix. keep out of direct sunlight, and monitor the humidity and soil moisture. Slowly introducing levels of sunlight as the seedlings develop........ you get the idea...... go for the prepared seedlings).
Another tip is get the deepest pot you can to allow root development. Deep roots allow for resistance against times of dry stress. So best to start early.
After planting your seedlings, wet the pot up well, and allow the pot to dry down between waterings - don't kill them with love. A little bit of wilting is good.
(gotta be cruel to be kind).
pushing wetting drying cycles stimulates root development and establishes the plant quicker.
Fertilsers
Go for slow release products with a higher Nitrate (N) ratio (to phosphorous (P) and potassium (K)).
At planting select something similar, but have a higher Phosphorous level to assist the roots. Mix into the potting mix well to avoid concentrated areas that will cause root burn.
Watering tips
When watering plants, try to split up the water a bit to allow the water to 'pulse' through the profile.
One single watering in a tight mix tends to run around the sides and out leaving the centre dry.
Several small waters allows an increased soaking, and each soaking spreads the wetted area.
Any signs of "Tip burn" on the plants, increase the volume of water to allow approximately a third of the total water (yep, measure it) applied to run through.
This does take a bit of fert with it, but it also leaches soil acids.
Liquid Fertilising tips
Always wet up the soil first, then apply the fertiliser solution. Water it in as well, but you don't need as much then.
Other than this....... they are just herbs, so they are not too hard to grow.