Board Thread:Questions and Answers/@comment-33804423-20171129003213/@comment-27282915-20171129033533

For convenience, see this video from HunterSerge that breaks down the three start decks from Triple D. He makes some suggestions for cards to pick up that are relatively cheap. Keep in mind, though, that the information may be outdated considering that the DDD start decks are from a previous season.

As for your request, I'm unfortunately not well-versed in price ranges. As such, I'll restrict my suggestions to a R or less rarity.

For Sun Dragons, since there are no Move cards in the deck, finding cards like Black Spotted Dragon, Black Dot, Blazehorn Dragon, or Shiningboard Dragon will help bolster its defenses.

As for Neodragons, I think HunterSerge's suggestions work here. In particular, Hold Star, Envelope, Mars Barrier and Biggest Dragonarms, Sonic Blast will help make a Neodragon more formidable.

Keep in mind that these are just surface level suggestions. You'd probably get better input if you post in a Facebook Buddyfight group or check out one of the many Buddyfight Discords running around.