we could do with two timers!

One for draw, 
One for time left to buy tickets; 

Often users get sad that they thought they still had 10 minutes to go and are waiting on that confirmation, to find they can't, or whatever else

be nice to make it crystal clear :D 

That was the initial implementation, but afterwards we decided to make it simpler. Two timers may confuse IMO

i think it would be very simply understood

Time left too buy tickets: 00:19:17

Lottery draw: 00:29:17

but it's a common thing to come up that people say they're trying to buy in that 10 minutes and asking where the buy tickets button has gone, so maybe after the 10 minutes you fill in with 

''No more tickets can be sold 10 minutes prior to draw'' 

Let's ask for more opinions on this one!

One time works but you also need clear language near the timer stating that buying stops 10 mins before draw. I know it's in the rules, but who reads rules lol

i think some clarification in this area would be nice, it's rare it comes up now but a new user does trip over this fact very so often