Level A2 - how much is it?

 Generally, roughly for Czech language on level A2 you need about 200 hours of learning (with or without teacher or actively communicating in Czech). 

You need about 1000 of words. List of most frequent words in Czech is available on wikipedia: https://cs.wiktionary.org/wiki/P%C5%99%C3%ADloha:Frekven%C4%8Dn%C3%AD_seznam_(%C4%8De%C5%A1tina)/%C4%8CNK_SYN2005/1-1000.

Why do you need an individual course?

 There is a huge amount of videos and other learning materials on internet. So why to pay for expensive course?

Because the language is a system and efective learning needs systematic aproach.

The best way is to combine learning at course, using free materails from internet and using language naturally among Czech people.