For a startup, what are the parameters that can make the certification request approved by Apple?
I know there are 2 types of certification described in FAQs here
high-volume manufacturing facility are eligible for the MFi Manufacturing License.
If you want to have your accessory connect through a 30-pin connector, or the new Lightning connector, or if you want any user-developed apps to communicate with the accessory through the iOS "External Accessory Framework", the accessory must be developed under a MFi license.
Any USB communications with the iOS devices would require use of the the 30-pin connector or the Lightning connector.
You should note that Apple will only grant MFi licenses to corporate entities that meet their criteria, and are willing to undergo a credit check. Additionally, after a recent restructuring of the MFi program, MFi accessories can now only be manufactured by companies that have been granted a "MFi Manufacturing License". As stated on the FAQ, Apple will only grant the Manufacturing License to companies that own a high-volume manufacturing facility. Only companies that have been granted a MFi Manufacturing License can buy the proprietary components that make it possible for accessories to connect to iOS devices, or communicate with user-developed apps through the iOS External Accessory Framework.
So, the realistic answer to your question, "can I put my product in the market without any problems?" is pretty simply, no.
Some other options would be to implement an accessory that communicates with the iPhone through wi-fi, or implement a "Bluetooth-LE" accessory that can communicate with user-developed apps through the CoreBluetooth Framework.
If you choose the Bluetooth-LE option, though, keep in mind that iOS devices before the iPhone 4S or iPad 3rd gen don't have the hardware to support Bluetooth-LE.
In any case, you'll have to get your app approved by Apple before it can be made available through the app store.