There are only 2 Units With Basic rarity in the game (Toilet Tower Defense). The first one is Camera Women, and followed by the second one Speakerman. There are two types of Speakerman. Tradable & Non-Tradable. Everyone in the game has Normal that is non tradable speakerman. But only few of these tradable speakerman exists.
How To Get Tradable Speakerman?
In the beginning of this game, there was no camera women in the summon. Hence we only had one BASIC unit at that moment. So we could summon this Speakerman. But as time passed we got another BASIC unit called camera women. And hence now a billion of these camera women exist.
Why there are only Limited Tradable Speakerman?
When this unit was in the game, as it was a BASIC unit people deleted it for some money in the game, so that they could summon again. Hence many of the players at that time deleted it and they were the OG players. Hence very few of these tradable speakerman exist and this unit is considered as one of the rarest BASIC unit of the game.