Easier to grow seedlings than seeds

It is observed that the germination rate of most seeds in goa remains fairly low. There are a number of moon snails, millipedes in the garden which are killing the seeds soon after they germinate, so that few seedlings are surviving.
After the seedling has grown to a certain height, there is rarely a problem with the plant, however it remains extremely difficult to make the seed germinate and grow. So though seeds are costing very less for most varieties of seeds, Rs 1 or less per seed, firms, individuals which sell seedlings are charging a fairly large amount for each seedling, sometimes Rs 25 or more, for a seedling in a pot.