Site to perform the switch: https://mychatrmove.info-mobilicity.ca/secure/plans
Mobilicity merge FAQs: http://mobilicity.ca/support/chatrmoveFAQ/
You'll get a $10 bonus chatr credit (within 30 days of switching) once you complete the move.
Also, keep in mind that chatr has auto-pay. Every month, you will get $10 in credits when you're on auto-pay for up to 8 months ($80 in total credits). More details at: http://chatrwireless.com/web/content/autopay
The prices available depend on your current plan. These are the plans available if you're on the $20/mo Unlimited Starter plan
If you are on the $15 Unlimited Talk & Text plan, the prices are $15/mo and $25/mo, respectively. Information thanks to i97ww4.
If you need to retrieve your PIN, either call Mobilicity at (877) 866-2458 or go to a store.
According to vekktorious, these plans also apply to new activations.