Howdy!
The ticket price is 1500 per ticket as you know, however it won't change to 500 it is more likely id raise the price sometimes depending on the item. It is not a giveaway it is a lottery and you enter at your own risk. No one is saying you need to enter but you most likely want the item if you enter.
If you would win an item I'm sure you be more then happy since you only payed 1500 for one ticket (depending on how many you bought). The reasons why there is only 5-8 winners each time is because the items will be used again and giving out 25 items each time would result with all people in olwest getting the item. If you do not like these terms id recommend you to not enter the lottery because these are the rules. However lottery have been a success so far and i wish you the best of luck if you enter.
The lottery was created to give players a chance to win cool items, since most of the nice ones are in gp and hs shop. It is a fun thing and I'm hoping i don't get more complains in pms regarding this since we only doing this for the players.
-Lafez