Recommendations for ND Filters / CP apart from PolarPro?

[Davphys]

Drone World buys stuff on eBay that they mark up. That is a 16 dollar filter that they sell for 99 bucks. They do the same thing by selling a $50 charger for $99 and a $150 itElite mod for a whopping $500.

Drone World is advertising a set for $99, which includes a 7 in 1 Variable Setting Filter. Anyone tried out these.

 

[AlPurvis2]

Check out this adjustable ND filter:
Amazon.com : Mudder ND2 to ND400 Adjustable Variable Filter for DJI Phantom 3 Advanced/ Professional (Not for DJI Phantom 3 Standard) : Camera & Photo
EDIT:
Super-cheap:
5-pack 1 Polarizer Filter 4 Neutral Density filters for DJI Phantom 3 Professional/Advanced

What about for a P4?

 

[msinger]

What about for a P4?

The same filters will fit the P4. I have a pretty comprehensive list of available filters here.

 

[Wolfiesden]

I'm interested in any recommendations for ND filters and circular polarisers for my P3A apart from the $150 set from Polar Pro. Whilst it seems their product is quite good, I have a difficult time paying that much for something they've admitted costs them $10 to make.

Cheers.

You paid $800 to $1000 for your P3. Just how much do you think it cost DJI to make? I would be surprised if it was more than $200.