The Buy a Vowel feature allows you to spend Coins to unlock all available vowel spaces within a level!
The cost to buy different vowels will differ depending on how many of that specific vowel there are in the level. For example, if there are more "E" spaces in a level than "O", the price to buy the "E" will be higher than "O."
This is a once-per-level opportunity and must be taken advantage of before finding any words. If you miss the opportunity, you will not be able to opt in until the next level.
The cost to buy different vowels will differ depending on how many of that specific vowel there are in the level. For example, if there are more "E" spaces in a level than "O", the price to buy the "E" will be higher than "O."
This is a once-per-level opportunity and must be taken advantage of before finding any words. If you miss the opportunity, you will not be able to opt in until the next level.