docs: improve scientific format pricing

This commit ensures that people know how to use scientific format when
setting prices.

orchestrators/guides/get-started.mdx

@@ -97,8 +97,7 @@ livepeer \
 
 - `-nvidia` is used to specify a comma delimited string of Nvidia GPU IDs. The
   flag is only required when transcoding with Nvidia GPUs
-- `-pricePerUnit` is used to specify the price (wei per pixel) for transcoding.
-  The flag is required on startup, but the value can be changed later.
+- `-pricePerUnit` specifies the price for transcoding. It can be in wei per pixel (e.g., `1000`) or other currencies with exponential notation (e.g., `0.5e2USD`). This flag is required on startup but can be changed later.
 - `-serviceAddr` is used to specify the publicly accessible address that the
   orchestrator should receive requests at. Changing this requires a blockchain
   transaction, so it's preferable to use a hostname for a domain you own, not an

orchestrators/guides/set-pricing.mdx

@@ -72,8 +72,6 @@ You can set the base price per pixel using the `livepeer_cli`:
 
 7. To verify the price was updated, check the log from your node.
 
-
-
 # Setting fiat-denominated price
 
 With the release of go-livepeer version 0.8.0, we are introducing a feature to allow specifying the transcoding price per pixel in USD. This is a backward-compatible change, which still supports setting the price in Wei but now gives the option of using custom currencies instead, with USD being the default.
@@ -102,7 +100,7 @@ e.g.:
 -pricePerUnit 0.0665USD
 ```
 
-Notice that the `-pixelsPerUnit` flag supports the exponential notation, so it’s easier to understand the value being set. The `-pricePerUnit` does not support it though, so a standard decimal notation must be used. This is also an incentive to use the `-pixelsPerUnit` value in order to keep the `-pricePerUnit` as an easily readable value.
+Notice that both the `-pixelsPerUnit` and `-pricePerUnit` flags support exponential notation, so it's easier to understand the value being set.
 
 This feature is also supported by gateways, with the `-pixelsPerUnit` flag staying the same, while the `-maxPricePerUnit` should be set instead for the max price. The currency is specified in the same format.
 

references/go-livepeer/cli-reference.mdx

@@ -123,15 +123,13 @@ also contain instructions for using flags to enable certain functionality in
 - depositMultiplier: The deposit multiplier used to determine max acceptable
   faceValue for PM tickets. Default `1`
 
-- pricePerUnit: The price per 'pixelsPerUnit' amount pixels. Must be greater
-  than 0. Error if not set.
+- pricePerUnit: The price per 'pixelsPerUnit' amount pixels. Must be greater than 0. Can be specified in wei (e.g., `1000`) or other currencies with exponential notation (e.g., `0.5e2USD`). Error if not set.
 
 - maxPricePerUnit: The maximum transcoding price (in wei) per 'pixelsPerUnit' a
   gateway is willing to accept. If not set explicitly, gateway is willing to
   accept ANY price. Default `0`
 
-- pixelsPerUnit: Amount of pixels per unit. Set to '> 1' to have smaller price
-  granularity than 1 wei / pixel. Default `1`
+- pixelsPerUnit: Amount of pixels per unit. Can be specified in scientific notation (e.g., `1e12`). Set to '> 1' to have smaller price granularity than 1 wei/pixel. Default `1`.
 
 - pricePerGateway: json list of price per gateway or path to json config file.
   Example: