A quick look tells me both 99¢ and $2.99 are popular prices. I'd study the top 100 in your category and do a few tests. 99¢ may help you break into the market and $2.99 may be where you eventually end up. If you have a favorite author or two in your new genre, join their mailing list and ask their advice via e-mail. If you struggle with romance story structure--like many new writers do--you may find this Nina Harrington book helpful: http://www.amazon.com/Write-Short-Romance-Kindle-Books-ebook/dp/B00UDP3XBU/ref=sr_1_1?s=digital-text&ie=UTF8&qid=1435689440&sr=1-1&keywords=how+to+write+short+romance+kindle Her chapter on story structure is fantastic.
For a beginner, I recommend this book: http://www.amazon.com/Write-Short-Romance-Kindle-Books-ebook/dp/B00UDP3XBU/ref=sr_1_1?s=digital-text&ie=UTF8&qid=1438695541&sr=1-1&keywords=nina+harrington
And this author: https://www.youtube.com/watch?v=wxZscUFrZpw Especially note what Susan says at the 30-second mark.
Beyond that, study the market:
Top selling authors (search by category): http://www.amazon.com/author-rank
Top selling books (search by category): http://www.amazon.com/Best-Sellers-Kindle-Store-eBooks/zgbs/digital-text/154606011/ref=zg_bs_nav_kstore_1_kstore
My two main rules: 1-KISS (keep it simple, silly) 2-work every day--even if it's only a little, it adds up in the long run.
GOOD LUCK AND HAVE FUN! :)